Didymos is a small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified Didymos as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.
Didymos orbits the sun every 769 days (2.11 years), coming as close as 1.01 AU and reaching as far as 2.27 AU from the sun. Didymos is about 0.8 kilometers in diameter, making it larger than ~97% of asteroids but small compared to large asteroids, comparable in size to the Golden Gate Bridge.
The rotation of Didymos has been observed. It completes a rotation on its axis every 2.26 hours.
Didymos's orbit is 0.04 AU from Earth's orbit at its closest point. This means that there is a wide berth between this asteroid and Earth at all times.
Didymos has 8 close approaches predicted in the coming decades:
|Date||Distance from Earth (km)||Velocity (km/s)|
|Oct. 4, 2022||10,656,479||5.994|
|Oct. 20, 2062||7,427,722||5.141|
|Nov. 29, 2083||22,034,564||9.582|
|Sept. 19, 2102||22,793,097||9.158|
|Nov. 4, 2123||5,856,253||5.230|
|Dec. 2, 2144||26,654,808||10.557|
|Sept. 17, 2163||27,162,851||10.172|
|Oct. 14, 2184||8,589,293||5.439|
Didymos's orbit is determined by observations dating back to April 11, 1996. It was last officially observed on Jan. 21, 2023. The IAU Minor Planet Center records 3,121 observations used to determine its orbit.
The position of Didymos is indicated by a ◯ pink circle. Note that the object may not be in your current field of view. Use the controls below to adjust position, location, and time.
The above comparison is an artistic rendering that uses available data on the diameter of Didymos to create an approximate landscape rendering with Mount Everest in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.